Bolt-heading machine.



No. 648,383. Patented May I, I900.

J. n. BLAKESLEE.

BOLT HE'ADING MACHINE.

' (Application filed Nov. 28, 1898. Renewed Sept. 29, 1899.) (No Model.)2 Sheets-Sheet l.

Wm e ss, Inventor;

- Jblm RBlakeslee, I I, I

No. 648,383. Patented May I, I900. v

J. R. BLAKESLEE.

BOLT HEADING MACHINE.

(Application filed Nov. 28, 1898. Renewed Sept 29, 1899.)

(No Model.)

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NITED STATES" PATENT Fines.

JOHN R. BLAKESLEE, or GLENVILLE, oI-no.

BO LT- H EAD'I No MACHINE.

SPECIFICATION forming part of LettersPatent No. 648,383, dated May' 1,1900. Application filed Novemher 28, 189B. Renewed SeptemherZQ, 1899.Serial nojvsaisz. (No model.)

To all whom it may concern:

Be it known that 1, JOHN R. BLAKESLEE, a citizen of the United States ofAmerica, and a resident of Glenville, in the county of Guyahoga andState of Ohio, have invented certain new and useful Improvements inBolt-Heading Machines,of which the following is a specification.

This invention relates to machines for heading bolts; and it consists ofa new construetion and adaptation of a safety-pitman connecting thecrank-operating shaft with the gripping-die mechanism.

The object of the invention is to provide against the danger of breakageor damage to said mechanism by'reason of the misplacement of a blank orthe accidental falling of any other object between the gripping-dies.

The nature of this invention and in what manner the same is to beperformed will fully appear from the subjoined description and in and bythe accompanying drawings, in which- Sheet 1: Figure 1 is a top or planview of a bolt-heading machine having my improvement embodied therein.Fig. 2 is a side elevation of the same. Sheet2: Fig. 3 is an endelevation of the machine, partly in section, showing the newconstruction of a knucklejoint which operates the-movable grippingw die.Fig. lis a'horizontal section of the new safety-pitman. Fig. 5 is avertical section of the same. Figs. 6, 7, '8, and 9 are details of partsof the mechanism comprising said safety-pitman.

Like letters of reference indicate like parts throughout the severalviews.

A represents the bed and supporting-frame for the operating mechanismsof the machine, which may be of one integral casting. A and A" are theways or slides for the movable dieholding heads. These parts do notconstitute any part of my invention, but are introduced to show theconnection of my improvement with the same.

The first part of my invention consists in the peculiar construction ofthe knucklejoint which operates the movable grippingdie. B is achambered projection on the bed A, in which this knuckle-joint issupported and operated. C is one member of the joint,

consisting of a hollow or tubular post 0, having arms 0 and 0 Thismember is supported on a pin or bolt D, passing through said post andfixedin the rounded portion of said chamber. E is a link connecting thearm 0 with the movable die-head E. arm 0 contains a ball-jointconnection with the rod F, comprising a part of the new pitman. G is aball on the end of rod F. G is a half-spherical cavity in the arm 0 inwhich the ball G rests, and G is a half-spherical cap covering the balland is secured onto the arm by screws or bolts 9 g.

The second part of my invention consists in the peculiar construction ofthe pitman which operates in conjunction with the said knuckle-joint. His the main portion of the pitman, consisting of a hollow or tubularpart H and the eye part H, which connects it with the crank K on thedriving crank-shaft I. The rod F is inserted in the open end of saidhollow part H and is held therein by a ring F, secured to the part H bythe screws ff. On the under sideof'said part H are provided lugs or carsh h, and in these lugs is pivoted an angle-lever L, the short curved armZ of which bears against the end of the said rod F. The lever L is heldup in its working position by a. block M, having a beveled or inclinedfront m, upon which theend of the lever rests. The block M is supportedin the lower end of a bracket N, consisting of the plates at 'n, boltedonto the pitman H. O is a tubular projection on the under side of thepitman, in which is contained a spring S, which bears against the backend of the block M. P is a screw-threaded pin screwed into the smallerpart of the projection O for thepurpose of regulating the tension of thespring S. Q is a jam-nut on said pin 1? for tightening the pin in place.The eye H on the pitman H is made in two parts,which are securedtogether with bolts j j. The inside surfaces of said parts H" are madeconcave. V is a ring having a convex outer surface which fits within thesaid concavity of the eye H". Through the said ring V the wrist-pin7.5011 the crank K is inserted and is held therein by a plate T, boltedonto its end.

The working of this device is as follows: Should ablank become misplacedor other Thelever pushing on the'incline m, the spring also-yielding.This would release the point of the lever from its support and allow thelever to fall into the position seen'in dotted against the pressure.

claim islines in Fig. 2. When thistakes place, the

rod F would slide back and forth in the hol-' low part of the pitmanduring its further movements until stopped. To replace the lever L, thepoint of a hand-bar is inserted at m, Fig; 2, against the flange 0n theblock M and the block pushed inward, the spring yielding is againraised, thehand-bar removed, and

the block assumes its normal position for retaining the lever in itsworking posit-ion.

Having described my invention, what 1. ln'combination with'pitman H F,of'the knuckle-joint consisting of post member 0,

fulcrumed in the chamber B, having memberC link E connecting said memberwith moving die-head E, member 0 having ball- The point of the leversocket G and cap G, constructed to operate as described. j 7

d 2. In abolt-heading machine provided with heading and gripping-diemechanisms, the combination with the driving crank-shaft I, of thepitman H comprising the hollow part H, rod F supported in said hollowpart H, angle-lever L pivotally suspended in the lugs h h on the underside of said part H, and having its short arm Z bearingagainst the endof rod F, bracket N attached tothe pitman, block M supported insaid'bracket and adapt ed for supporting the movable end of said leverL, tubular projection O on the under side ofeye H, springs in saidtubular projection and bearing against the back of said block M, and theregulating-screw P back of the spring 8 and theeye H provided with ringV, constructed and adapted to operate substantially as and for thepurpose set forth.

' Signed by me at Cleveland, Ohio, this 15th day of November, 1898. I

' JOHN R. BLAKESLEE.

Witnesses 7 (inc. W.TIBBITTS, -F. J. PATTERSON.

